I had this soup at the Capital Grill at the Hermitage Hotel in Nashville recently and thought it was the best soup I had ever tasted. (If you read the ingredients you can see why!)They gave me the recipe and I was blown away by how easy it was to make. You MUST allow the 5 hours for the onions to sweat as that is the secret of the velvety sweetness the soup has. The toasted brie sandwich segment dropped it, plus the bacon and chives take it to even headier heights!

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4 to 8 servings.

10 large sweet Vidalia onions
1lb Plugra butter
1 qt heavy cream
Salt and white pepper, to taste
Smoked bacon, crumbled. Get really good quality bacon for this, chop it and saute until crispy
Freshly snipped chives
Brie grilled cheese sandwich

Peel and chop the onions into 1 inch chunks. In a large heavy bottomed saucepan, melt the butter until it becomes foamy and add the onions. Add about 1 tbsp of salt at this point and stir to combine all of the ingredients in the pot and continue to cook for 5 hours until they have completely softened and exuded the majority of their moisture.
Keep in mind that you really don’t want to get any color on the onions during this process so if you see it happening, lower the heat more.
After the 5 hours, add the cream and just heat it through gently.
When everything is hot and combined, you need to puree the soup in a good quality blender. If you want that really velvety texture, pass it through a fine mesh strainer or a mouli after blending it but this is an optional step.

Season with salt and pepper, pour into the bowls and garnish with some smoked bacon, chives and a triangle of Brie grilled cheese sandwich.